Cardano is an open-source project creating a decentralised platform which includes a cryptographic currency unit called ADA (equaling one million Lovelaces) and which allows complex, programmable transfers of value. The principal software stack powering the platfrom is called "Cardano Settlement Layer" (cardano-sl, written in Haskel), while its graphical desktop wallet client is known as "Daedalus". Cardano's ADA is a proof-of-stake cryptocurrency which uses a custom algorithm called "Ouroboros". The software is developed by Input Output Hong Kong (IOHK) and the entire project is managed by Cardano Foundation, a non-profit organisation.

DistroWatch.com - BitKey

BitKey is a FREE, Debian-based live Linux distribution designed for Bitcoin users; it comes with specialist utilities to perform highly secure air-gapped Bitcoin transactions. It contains a swiss army knife of handy Bitcoin tools that support a wide range of usage models, including a few very secure ones which would otherwise be difficult to perform. The system boots into one of the three available modes: "cold-offline" - for creating a wallet and signing transactions; "cold-online" - for watching the wallet and preparing transactions; "hot-online" - standard usage but less secure as the private keys are known to the computer which is connected to the internet.

The blockchain, perhaps the most symbolic term introduced by the Bitcoin phenomenon, is nothing more than a public ledger of all Bitcoin transactions that have ever been executed. This file is constantly growing as blocks of completed transactions are added to it in a chronological order. The transactions are validated and relayed by a network of connected computers, each of which keeps a copy of the file. As the blockchain contains complete information about the addresses and their balances right from the initial (genesis) block to the most recently completed block, the file is large, standing at over 27 gigabytes as of January 2015, just six years after the introduction of Bitcoin.

The Monacoin project has released an updated version of the Japanese, proof-of-work (scrypt) cryptocurrency wallet client. Monacoin (MONA) Core 0.13.2.2 imports all the recent Litecoin improvements, including the "segregated witness" feature: "Monacoin version 0.13.2.2. Update information: BIP68, BIP112 and BIP113 soft fork; BIP141, BIP143 and BIP147 soft fork. Activation for the SegWit soft fork is being managed using BIP9. At the beginning of the first retarget period after SegWit's start date of 8 March 2017, miners can update the Monacoin client to Monacoin Core 0.13.2 to signal SegWit support. When a super-majority of 75% is reached, SegWit is activated optionally, and if 75% of blocks within a 10,080-block retarget period (about 10.5 - 14 days) signal support for SegWit, after another 10,080 blocks, SegWit will be required." The above information can be found on the project's download page. The new Monacoin wallet client is available for Linux, macOS and Windows (signatures): monacoin-0.13.2-x86_64-linux-gnu.tar.gz (22.8MB), monacoin-0.13.2-osx-unsigned.dmg (13.8MB), monacoin-0.13.2-win64-setup-unsigned.exe (12.5MB), monacoin-0.13.2-win64.zip (23.0MB). The source code link: monacoin-0.13.2.2.tar.gz (7.25MB).

The Monacoin project has announced the availability of Monacoin (MONA) 0.10.4, the latest stable release of the Japanese cryptocurrency launched in January 2014 as a fork of Litecoin. This version is the result of a number of Litecoin commits effected on May 8 and 9, together with a couple of Monacoin-specific fixes. Some of these include: "add autogen.sh to source tarball; avoid leaking file descriptors in RegisterLoad; build - fix LibreSSL detection; make sure LogPrint strings are line-terminated; use unique name for AlertNotify tempfile; handle leveldb::DestroyDB() errors on wipe failure; add missing files to files.md; fix masking of irrelevant bits in address groups; add unit test for CNetAddr::GetGroup; net - set SO_REUSEADDR for Windows too; rpc-tests - re-enable rpc-tests for Windows; add support for MiniUPnP API version 14; PARTIAL - typo fixes...." Download the new Monacoin wallet client from here: monacoin-0.10.4.0-linux64.tar.gz (17.1MB), monacoin-0.10.4.0-osx-unsigned.dmg (10.4MB), monacoin-0.10.4.0-win64-setup.exe (11.9MB), monacoin-0.10.4.0-win64.zip (31.6MB). The source code is available from GitHub: v0.10.4.tar.gz (4.58MB).